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Birthday Party Story Problems: Find the Missing Number

Grade 1 addition and subtraction story problems within 20 at a birthday party, with the unknown at the start, middle, or end and compare stories.

Grade 1MathInteractive · Printable

Aligned to1.OA.A.1

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What’s included

Single worksheet
Auto-graded online
1 Common Core standard
Printable answer key
14 questions
Classroom-ready

Details

Format: Interactive · Printable
Grade: Grade 1
Subject: Math
Question types: Fill in the blank, Multiple choice, Matching, Short answer

About this worksheet

What students practice

Students add and subtract within 20 to solve story problems with the unknown in any position.
Students solve compare stories that ask how many more, how many fewer, or how many in all.
Students match a story to a number sentence with a box for the unknown number.

How to use

Read each story aloud and let students act it out with counters or draw it before they solve. Use the number line in problem 12 to show counting on from 8.

Curriculum